magnetic disk unit

例句：

1. 1.The magnetic disk unit is the main componentof the computer's hard drive.
   磁碟单元是计算机硬盘的主要部件。
2. 2. The magneticdisk unit is responsible for storing and retrieving data from the hard drive.
   磁碟单元负责从硬盘中存储和检索数据。
3. 3. The magnetic disk unit has a limitedlifespan, so it needs to bereplaced regularly.
   磁碟单元的使用寿命有限，因此需要定期更换。